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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">nodgo</journal-id><journal-title-group><journal-title xml:lang="ru">Российский журнал детской гематологии и онкологии (РЖДГиО)</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Pediatric Hematology and Oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2311-1267</issn><issn pub-type="epub">2413-5496</issn><publisher><publisher-name>LTD “Graphica”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21682/2311-1267-2024-11-2-108-111</article-id><article-id custom-type="elpub" pub-id-type="custom">nodgo-1046</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Нервно-мышечная хористома седалищного нерва у ребенка: описание клинического наблюдения и краткий обзор литературы</article-title><trans-title-group xml:lang="en"><trans-title>Neuromuscular choristoma of the sciatic nerve in a child: description of clinical observation and brief literature review</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5526-1385</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковтун</surname><given-names>Д. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovtun</surname><given-names>D. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., заведующий центральным патологоанатомическим отделением общей патологии</p><p>194291, Санкт-Петербург, ул. Сантьяго-де-Куба, 7</p></bio><bio xml:lang="en"><p>Cand. of Sci. (Med.), Pathologist, Head of the Central Pathological Department of General Pathology of the Leningrad Region</p><p>7 Santiago de Cuba St., Saint Petersburg, 194291</p></bio><email xlink:type="simple">Opatol@lo-bsme.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0366-3662</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полушин</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Polushin</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., врач центрального патологоанатомического отделения общей патологии</p><p>194291, Санкт-Петербург, ул. Сантьяго-де-Куба, 7</p></bio><bio xml:lang="en"><p>Cand. of Sci. (Med.), Pathologist of the Central Pathological Department of General Pathology of the Leningrad Region</p><p>7 Santiago de Cuba St., Saint Petersburg, 194291</p></bio><email xlink:type="simple">olegpolushin@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-1046-8093</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бубликова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bublikova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анастасия Андреевна Бубликова: врач центрального патологоанатомического отделения общей патологии</p><p>194291, Санкт-Петербург, ул. Сантьяго-де-Куба, 7</p></bio><bio xml:lang="en"><p>Pathologist of the Central Pathological Department of General Pathology of the Leningrad Region</p><p>7 Santiago de Cuba St., Saint Petersburg, 194291</p></bio><email xlink:type="simple">anastasiaselenteva1997@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3818-1535</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щербакова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shcherbakova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач центрального патологоанатомического отделения общей патологии</p><p>194291, Санкт-Петербург, ул. Сантьяго-де-Куба, 7</p></bio><bio xml:lang="en"><p>Pathologist of the Central Pathological Department of General Pathology of the Leningrad Region</p><p>7 Santiago de Cuba St., Saint Petersburg, 194291</p></bio><email xlink:type="simple">maestrovody@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-6267-0193</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зенько</surname><given-names>О. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zenko</surname><given-names>O. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач центрального патологоанатомического отделения общей патологии</p><p>194291, Санкт-Петербург, ул. Сантьяго-де-Куба, 7</p></bio><bio xml:lang="en"><p>Pathologist of the Central Pathological Department of General Pathology of the Leningrad Region</p><p>7 Santiago de Cuba St., Saint Petersburg, 194291</p></bio><email xlink:type="simple">oksana.zolotilina.91@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0933-8502</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Снищук</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Snishchuk</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-нейрохирург, главный специалист Комитета по здравоохранению Ленинградской области по нейрохирургиидетского возраста</p><p>195009, Санкт-Петербург, ул. Комсомола, 6</p></bio><bio xml:lang="en"><p>Neurosurgeon; Chief Specialist of the Leningrad Region Health Committee for Pediatric Neurosurgery</p><p>6 Komsomol St., Saint Petersburg, 195009</p></bio><email xlink:type="simple">v_p_s@list.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-3081-6999</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тер-Абрамова</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ter-Abramov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-нейрохирург</p><p>195009, Санкт-Петербург, ул. Комсомола, 6</p></bio><bio xml:lang="en"><p>Neurosurgeon</p><p>6 Komsomol St., Saint Petersburg, 195009</p></bio><email xlink:type="simple">diana8488@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГКУЗ ЛО «Бюро судебно-медицинской экспертизы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bureau of Forensic Medicine</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ГБУЗ ЛО «Детская клиническая больница»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Children’s Clinical Hospital of the Leningrad Region</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>08</month><year>2024</year></pub-date><volume>11</volume><issue>2</issue><fpage>108</fpage><lpage>111</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ковтун Д.П., Полушин О.Г., Бубликова А.А., Щербакова Е.В., Зенько О.Е., Снищук В.П., Тер-Абрамова Д.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ковтун Д.П., Полушин О.Г., Бубликова А.А., Щербакова Е.В., Зенько О.Е., Снищук В.П., Тер-Абрамова Д.А.</copyright-holder><copyright-holder xml:lang="en">Kovtun D.P., Polushin O.G., Bublikova A.A., Shcherbakova E.V., Zenko O.E., Snishchuk V.P., Ter-Abramov D.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.nodgo.org/jour/article/view/1046">https://journal.nodgo.org/jour/article/view/1046</self-uri><abstract><p>Казуистика доброкачественной тритон-опухоли/нервно-мышечной хористомы (НМХ) в мировой медицинской литературе насчитывает не более 40–50 наблюдений. В отечественных источниках описаний подобного заболевания найти не удалось. Приводим собственное наблюдение. У мальчика 6 лет была диагностирована доброкачественная опухоль правого седалищного нерва. Проведены седалищный невролиз и удаление новообразования размерами 8 × 3 × 3 см. При гистологическом и иммуногистохимическом исследованиях обнаружена опухоль, построенная из переплетающихся в коллагеновом матриксе пучков поперечнополосатых мышц и нервных волокон. Заключение: доброкачественная тритон-опухоль (НМХ).</p><p>НМХ – чрезвычайно редкое новообразование, связанное с крупными нервами и чаще возникающее в детском возрасте. Клинически обычно регистрируется болевой синдром/нейропатия. Хотя зрелая тритон-опухоль считается доброкачественной, при ней часто наблюдаются рецидивы и десмоидный фиброматоз (в основном постоперационный): предполагается, что травма стимулирует фибробласты/миофибробласты с мутацией гена CTNNB1. По этой причине для пациентов с классическими клиническими и рентгенологическими признаками НМХ рекомендуется бесконтактная диагностика. Для разработки оптимального подхода к лечению этой опухоли и оценки долгосрочного прогноза заболевания необходимо накопить достаточное количество наблюдений.</p></abstract><trans-abstract xml:lang="en"><p>The casuistry of benign triton tumor/neuromuscular choristoma (NMC) in the world medical literature has no more than 40–50 observations. There are no descriptions of a such disease in Russian sources. Here is our own case. A 6-year-old boy was diagnosed with a benign tumor of the right sciatic nerve. Sciatic neurolysis and removal of the neoplasm with a size of 8 × 3 × 3 cm were performed. Histological and immunohistochemical investigation revealed a tumor built of bundles of striated muscles and nerve fibers intertwined in the collagen matrix. Conclusion: benign triton tumor (NMC).</p><p>NMC is an extremely rare neoplasm associated with large nerves and occurs more often in childhood. Pain syndrome/neuropathy is usually clinically registered. Although a mature triton tumor is considered benign, it often has recurrences and desmoid fibromatosis (mainly postoperative): it is assumed that trauma stimulates fibroblasts/myofibroblasts with a mutation of the CTNNB1 gene. For this reason, noncontact diagnosis is recommended for patients with classic clinical and radiological signs of NMC. To develop an optimal approach to the treatment of this tumor and to assess the long-term prognosis of the disease, it is necessary to accumulate a sufficient number of observations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>опухоль тритона</kwd><kwd>нервно-мышечная хористома</kwd><kwd>седалищный нерв</kwd><kwd>дети</kwd></kwd-group><kwd-group xml:lang="en"><kwd>triton tumor</kwd><kwd>neuromuscular choristoma</kwd><kwd>sciatic nerve</kwd><kwd>children</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено без спонсорской поддержки.</funding-statement><funding-statement xml:lang="en">The study was performed without external funding.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Perry A. Bening triton tumour/neuromuscular choristoma. In: WHO Classifi cation of Tumours Editorial Board. 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